AAV testing, Manual and electric |
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AAV testing, Manual and electric |
malcolm2 |
Feb 20 2017, 05:59 PM
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#1
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Advanced Member Group: Members Posts: 2,745 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
Ok. I have had the AAV off for a couple weeks now. I figured it was time to re-install. Wanted to test it first.
I put it in the freezer. The valve was open before and after. I got the wife hair dryer out and got it hot enough to NOT hold on to. But the valve stayed open. I got my drill battery out and jumped it to the connector. Very quickly the valve closed. I decided to blow threw it. Air did not move quickly thru it, but i could hear the hissing as it came out. So the question is: is the AAV supposed to close up tight? |
pbanders |
Feb 21 2017, 09:05 AM
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#2
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Senior Member Group: Members Posts: 939 Joined: 11-June 03 From: Phoenix, AZ Member No.: 805 |
If it closes when you apply +12V it's working for the most part. It should close when heated externally. My guess is that you're not getting it hot enough with the hair dryer, despite it being too hot to hold. To be honest with you, I've never tested an AAR with just externally applied heat, it could be that it takes a LOT of heat. If it doesn't seem to close all the way, like most old AAR's, it's probably full of gunk. Do as Jim suggests and use some WD40 on it. What I do is let it open fully, then plug one end and fill it about 3/4 with WD40. Plug the other end and shake it like hell for a couple minutes, then dump the WD40 out onto a paper towel. Lots of gunk? Repeat until the stuff that comes out looks uncontaminated. Close it with +12V and check to see if it shuts fully, and watch through the port to see if it closes smoothly. Repeat the overall process until you're satisfied with it's operation. BTW, be extremely careful with the coil wire on the bottom, it's very easy to damage or break, and a bitch to fix.
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